可切换带宽的可调频率带通滤波器设计
发布时间：2018-07-31 06:54
【摘要】：提出了一种可切换固定带宽的可调频率带通滤波器新结构,且实现了在带宽切换前后都能保持固定带宽的特性。基于谐振线间的耦合系数提取算法,参考滤波器综合理论,设计并加工了工作频段为1.3~1.45 GHz的开环微带谐振可切换带宽的可调频率带通滤波器。测试结果表明,在整个工作频段内,3 d B带宽在切换前后分别为120 MHz、100 MHz和80 MHz,对应的插入损耗各是-2.9 d B、-2.4 d B、-2.6 d B,测试结果与仿真结果吻合良好。该滤波器具有结构简单、加工难度低、体积小、馈电控制简单等优点。
[Abstract]:A novel tunable frequency bandpass filter with switchable fixed bandwidth is proposed, and the characteristics of maintaining fixed bandwidth before and after bandwidth switching are realized. Based on the coupling coefficient extraction algorithm between resonant lines and the theory of reference filter synthesis, a tunable frequency bandpass filter with an open-loop microstrip resonant switchable bandwidth of 1.3 ~ 1.45 GHz is designed and fabricated. The test results show that the bandwidth of 3 dB is 120 MHz / 100 MHz and 80 MHz before and after switching, respectively, and the corresponding insertion loss is -2.9 dB ~ (2. 4) D ~ (2. 6) dB ~ (2. 6) dB respectively. The measured results are in good agreement with the simulation results. The filter has the advantages of simple structure, low processing difficulty, small volume and simple feed control.
【作者单位】： 南京邮电大学;南京米乐为微电子科技有限公司;
【分类号】：TN713.5
本文编号：2154782
[Abstract]:A novel tunable frequency bandpass filter with switchable fixed bandwidth is proposed, and the characteristics of maintaining fixed bandwidth before and after bandwidth switching are realized. Based on the coupling coefficient extraction algorithm between resonant lines and the theory of reference filter synthesis, a tunable frequency bandpass filter with an open-loop microstrip resonant switchable bandwidth of 1.3 ~ 1.45 GHz is designed and fabricated. The test results show that the bandwidth of 3 dB is 120 MHz / 100 MHz and 80 MHz before and after switching, respectively, and the corresponding insertion loss is -2.9 dB ~ (2. 4) D ~ (2. 6) dB ~ (2. 6) dB respectively. The measured results are in good agreement with the simulation results. The filter has the advantages of simple structure, low processing difficulty, small volume and simple feed control.
【作者单位】： 南京邮电大学;南京米乐为微电子科技有限公司;
【分类号】：TN713.5
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